Mechanical drier.



W. M. GUMMER. MECHANICAL DRIER. APPLIOATION FILED APR. 6, 1908.

Patented Sept. 21, 1909. 3 SHEETS-SHEET 1.

Fig.1

AT FEST 5/271 gm/1 7Q. YMMA/M W. M. CUMMER.

MECHANICAL DRIER.

APPLICATION FILED APR. s, 1908.

934,712- Patented Sept. 21, 1909.

3 SHEETS-SHEET 2.

ATT E s T INVEJN TOOL W. M. CUMMER.

MECHANICAL DRIER.

APPLICATION FILED APR. e, 1998.

Patented Sept. 21, 1909.

3 SHEETS-SHEET 3.

lNVENTOR M45947? Wfifiwmm BY 7% W MM ATTYS.

llhl el llhi Pl.

WILL-rate is. comes, cs cries/eschew, om-o.

iseceemcas salsa} escalation of m ates Pateiitetl sect, 21,1969.

Application filed Ami 63, 1908. Serial-Es. QQEAZ S- To all whom it may come .21:

Be it known that I, JVILLiAi-i M. CIFMMER,

a citizen of the Unitecl States, residing at the art to which it appertains to make and use the same.

My invention rel-ates to improvements in mechanical clriers, and the invention consists in the construction and combination of parts substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure l is a sectional cleva ion of a furnace and plan elevation of my improved construction of 29 drying cylinder therein. Fig. 2 is an enlarged cross section of the cylinder. Fig 3 is a still further enlarged cross section of a port-ion of the cylinder and of one of my improveil air valves shown in that connection. Figs. 4 and 5 show two longitudinal .sec tional views mechanism in which 5 is so far modification of Fig. i as to take in'air through the shell at the ends of the internal deflecting member, Whereas, in Fig. 4 air or draft is only through the middle of the saidsliell and then oppositely throughthe member within. Fig. (i is a cross section of a portion of a cylinder corresponding in the main to Fig. 3 but showing amodificaticn of the lift lilacle giarticclerly as to its location in respect to the :lraft opening.

The invention is comprised in or in connection with cylinder C, and the saicl cylinder is ccnscructeal in part after my applies tion Ser. No. 39 ,131, and is built- With or of 1 i excusable number oi plates 2 running longiat least of por- 0 d1 lt .zigs a one That v v a. ment or a circle in cross section and has a er portion as 11 ,1 .42 n he (ii-11.; incicwec .PL, (1. Alla rascal-hol ant. wh ch offsets the inner etlge l of each 3 lti-i%fl011l l relatively as on oi the cy i of the air or clraft inlet valvereason of the peculiar construction. ancl saicl between the immediate inner edge 4 of each of said plates 2 and the outer edge 5 of the next succeeding plate'is filled With a channel bar or rail B, or its equivalent, to the flanges or edges of which the respective edge pen tieesl 4-. and 5 of saitl plates are firmly riveted. This construction contributes very much to the general strength of the cylinder as an entirety, and the longitudinal lepressioii or-recesscs in the periphery of the cylinclers especially afford; spaces in which to arrange the draft and shield mechanism, Whereby a free ingress of theheat products from the furnace is obtained and the material is prevented from sitting or Working out of the cylinder. I

Now, as to this mechanism, referred to herein as the guard, I believe I have devel oped the most perfect and satisfactory means that can be e'vised in and for the place in' which it is used, and two constructions thereof are shown. Thus, in l igs. 3 and e, I show the preferred form thereof and which consists of a metallic shell or drum l which so has a central opening 7 in its peri ohery and a central larger outlet .8 at its base, at which point it is provided with a flange 9 by which it is secured to the channel or like bar B over a coyrespciiding opening therein. il ithin the saitl shell or drain D I place barrel E, which has a neck 10 at its middle connecting it with inlet opening 7 and which practically constitutes the mouth to (l liarrel for the heated air and'products from the 9b furnace, and the ends 12 of said barrel flare outwardly in something like trumpet shape all around and are removed from the ends of drum D far enough to allorcl a free discharge thereinto, whence the products of combustiofi ancl heated air flow into the cylinder through (lischarge opening 8. All the openings orliolcs in the sci-fl channel bars B are fifillllp lfid with draft guarclsof the same lilild, l t-hea er liocl. may he adopted In the construction thus show the outer shell, shield or drum serves a means of preten ing the cascading mate ial in the cylinder from interfering with to (halt passages or of eimapingfroxh the cy i'oder if it should appear at this point, and. l by ion mate: i,

shield and barrel, would in. such .case flew, hack into the cylinder agaiz i as it rotates the, said parts to the top suc'ce sivify. The in 1.19 clined or converging Walls 14 in about opening 8 and the fial'l .barrel contribute to the keeping of the draft passages clear of possible obstructions from within the cylinder. The same general effects are obtained in Fig. 5, it being understood, however, that under no conditions does material cascade 01 work out ,through the openings 8 into the outer spaces of the guard in any such amount as to become an impediment tothe free inflow of draft or which would work waste of the material through the same. In fact both forms of the valve or guard mechanism shown are proof against any such waste or leakage, and one of the valuable features of this mechanism is its free draft and perfect security against leakage under all circumstances. Now, as to Fig. 5, it will be seen that the construction therein is identical with Fig. 4 except that the ends of the outer shell or shield D have limited" openings 15, through which draft enters-as well as through opening 7. In conguards.

they are riveted over the inner ends of said plates 2 through the side flanges of channel irons B. From these flanges said blades may be curved from their base inward toward the rising sideof the cylinder more or less, say

from full lines, Fig. 3 to full lines Fig. (5. This construction of lift blades taken along with the peculiar construction of plates 2 of the cylinder forms a series of longitudinal troughs in the cylinder for the material, and in which the material is carried up on the ascending side of the cylinder toward the top thereof and is gradually cascaded 'through the heated air within until the top is reached, and the material is all discharged. This is plainly shown in Fig. 2, and in experience it is found that very little.ifany of the material really overflows or is carried around so as to drop in advance of the draft inlet openings at the bottom of the cylinder especially when blade L is used and which forms a practically complete guard for the draft openings 8. But even if this should occur, the construction of the parts is such as to practically prevent the material from creeping out into the draft guards, and the inrushing draft and suction assist in safeguarding the draft portsor channels. Perfect protection against leakage of material through said parts is demanded by users of these machines, andnothing short of this will meet the requirements of the trade. Hence the importance of the walled guard substantially as herein shown and described.

It will be observed that with the foregoing construction there are shown single lift blades L for each series of inlets, and these blades areseated on the inner angle of the longitudinal recesses in which said openingsoccur and curve more orless" therefrom over the back of the recess rather than extending in the opposite direction. The two part guard for each opening cotiperates with said lift blade in keeping theopenings clear of the material and safeguards. escape thereof from the cylinder. Said lift blade is, therefore, an important factor in protecting the material from escape through said'openings as well as serving the purpose of lift blades for the material.

and facilitate the drying operation. I have also discovered that in some casesthis machine can be very advantageously used for cooling certain material, as clinkers from a cement kiln, by simply drawing outside air through by means of the usual, fan or blower at or near the head endof the cylinder. In

such case the inclosure of the cylinder is omitted and rotationthereof with sustained suction therefrom will do the work and save the hot clinkers in a pile and waitin them to cool before crushing and re ning the same.

What I claim is: l

1, A' cylinder having draft openings through its sides, andguards over the said openings consisting each of two portions l11' closedone within the other and having a draft space between them. a

2. A cylinder having recesses longitudinally in its side and draft openings through said recesses, and'a guard for each of said openings constructed with an 'outer shell and an inner barrel adapted to provide-a draft space between them entering the cylinder.

3. A cylinder provided with longitudinal recesses lengthwise in the wall thereof and having each a series of draft openings entering into the cylinder, and a two-part draft guard over each opening providing a draft passage between them, one of said parts consisting of a shell extending across the discharge portion of the other part and spaced therefrom.

, 4. A cylinder constructed between its ends with a series of longitudinal recesses within the periphery of the cylinder and each recess having a series of draft openings entering the cylinder, and .two guard members for each opening, said members constructed to the long delay hitherto sustained of piling for 10'0 discharge one into the other and hence into the body of the cylinder.

5. A cylinder having a: series of draft openings'entering'the same, combined with two part guards over said openings, one of said parts constituting a shield for the other, and the shielded part constructed with a loubledischarge.

'6. A cylinder constructed with draft openings through the wall; thereof and guards for said'openings consisting each of two portions inclosed one-within the other and the inner ortion adapted to discharge in the ends of the outer portion. I

7. A cylinder having draft openings through the wall thereof and double Walled guards for said openings through which the raft passes into the cylinder, one of said guards being within the other and adapted to discharge therein.

8. A cylinder having' lengthwise recesses with draft openings through the same and double walled guards over said openings comprisin inner and outer walls, and the inner of sai walls substantially barrel shaped.

9. A cylinderhaving recesses lengthwise within the periphery thereof and openings therein, in combination with substantially barrel shaped guards over said openings provided-with draft passages through the same, and a shield in each guard covering said ope'nin s. I

10. A cy inder having longitudinal re- 'cesses'in its side'a'nd a series of draft openings through each recess, in combination with guards over said openings consisting of two portions, one of said portions seated over each opening and the other portion across said opening and having a mouth for, the passage of the heated air.

' 11. A cylinder provided with a series of recesses longitudinally within the periphery thereof, a lift blade extending inward from the inner cornerof each recess, a series of\ draft openings in each recess for the passage of heated air into the cylinder, and guard members comprising two separate parts for each of said openings within said'recesses.

12. A cylinder provided with a series of recesses longitudinally within its periphery 'and inlet openings in each recess, in combination with a guard for each opening located within said recess, and a lift blade.

along eachrecess supported at the inner angle thereof.

13. A drying cylinder having a series of recesses lengthwise-at intervals about the same and within the periphery thereof and inlet openings in said recesses, in combination with a transversely curved plate supportedlengthwise from the inner angle of each recess and extendin inward therefrom in guarding relation to tlie openings in said cation in the presence of two witnesses.

VILLIAM M. CUMMER. Witnesses E. lVLFISHnR, R. B. Mosnn. 

